Mode amplitudes in dynamic light scattering by concentrated liquid suspensions of polydisperse hard spheres

This paper concerns the dynamic light scattering by suspensions of polydisperse hard spherical particles. It is concluded that for relatively high volume fractions and fairly narrow distributions, the light scattering correlation function should, to a good degree of approximation, be composed of two independent modes with well-separated decay times. The faster decaying mode describes collective stochastic compression–dilation motions and is...